google maps - Add Two library in android studio -


my application working fine in android studio when added library of google map.showing error.

package com.iremember.kiet;  import android.app.fragment; import android.os.bundle; import android.view.layoutinflater; import android.view.view; import android.view.viewgroup; import com.google.android.gms.maps.googlemap; //no error import info.androidhive.slidingmenu.r;// cannot resolve symbol r (when added library of google map)

build.gradle

apply plugin: 'com.android.application'  android {     compilesdkversion 18     buildtoolsversion "21.1.2"      defaultconfig {         applicationid "info.androidhive.slidingmenu"         minsdkversion 11         targetsdkversion 17     }      buildtypes {          debug {             debuggable true         }         release {             minifyenabled false             proguardfiles getdefaultproguardfile('proguard-android.txt'), 'proguard-rules.txt'         }     } }  dependencies {     compile 'com.android.support:support-v4:18.0.0'     compile 'com.android.support:appcompat-v7:21.0.3'     compile 'com.google.android.gms:play-services:6.5.87' }

the error " cannot resolve symbol r" comming after added google lib

step 1(optional helpful):

this java , not c or c++, stop trying memorize imports.

you using android studio based off intellij, turn on optimize imports: https://www.jetbrains.com/idea/help/optimizing-imports.html

step 2:

sync , clean project.

step 3:

without doubt, need target latest libs, these sdk manager:

apply plugin: 'com.android.application'  android {     compilesdkversion 22 // <-- 18     buildtoolsversion "22.0.0" // <-- 21.1.2      defaultconfig {         applicationid "info.androidhive.slidingmenu"         minsdkversion 11         targetsdkversion 22 // <-- 17     }      buildtypes {                  // <-- debug debuggable default         release {             minifyenabled false             proguardfiles getdefaultproguardfile('proguard-android.txt'), 'proguard-rules.txt'         }     } }  dependencies {     compile 'com.android.support:support-v4:22.0.0' // <-- 18     compile 'com.android.support:appcompat-v7:22.0.0' // <-- 21.0.3     compile 'com.google.android.gms:play-services:6.5.87' }

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